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You know that feeling you get when you've been wearing sunglasses all day? Well, forget it! These super-light frameless sunglasses weigh in at just over half an ounce! And with TR90 nylon frames, Ballast is as durable as it is comfortable. Top it off with Costa's premium polarized polycarbonate lenses, and you've got a pair of sunglasses that's at home in, on, and around the water. Designed to fit a medium profile. Integral hinge. 60mm lens size. Not compatible with prescription lenses.

Each pair of Costas features 100% polarized lenses, providing complete UVA, UVB, and UVC protection. Lifetime warranty against defects in materials and workmanship.

Costa 400 LensMade for anyone who lives on the water. Designed for adventure and built to perform with superior clarity, contrast, and definition. 400P Lenses are made of lightweight plastic and provide excellent impact and scratch-resistance.

Costa 580 LensYellow light is the enemy on the water and on land. It's hard for the eye to process, and changes how you see the world. Costa 580 Lenses cut down on yellow light, allowing the eye to see more red, blue, and green. The result is purer vision with unmatched contrast, definition, and colors.

Amber Lens is an excellent all-around lens that delivers the brightest field of vision. Perfect for sight fishing, driving, and everyday activities where high contrast is needed.

Gray Lens maintains color saturation and natural contrast. An all-around choice for sports on water and land.

Blue Mirror Lens is made for the open water. Delivers maximum contrast and color in full sun while eliminating glare. Allows a minimal 10% light transmission.